Incandescent-lamp socket.



PATENTED JULY 17, 1906. D. B. BULLARD & J. J. MINITER. INOANDESCENT LAMP SOCKET.

APPLICATION FILED 0 ('3T.13. 1904.

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Uis'rrnn sirens DUDLEY; B. BULLARD AND JOHN J. MINITER, OF

- NECTIOUT.

Para r. FFIGE.

BRIDGEPORT, con- INOANDESCENT-LAMP SOCKET.

Be it known that we, DUDLEY B. BULLARD and JOHN J. MINITER, citizens of the United States, and residents of Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Incandescent-Lamp Sockets, of which the following is a specification.

Our invention relates, to new and useful improvements in electric lamps, and more articularly to the socket, so called, for ncandescent lights.

j It is the object of our invention to produce an improved construction of socket whereby 'a sav ng of electrical power will be accomplished.

In iactoriesand Wherever a large number of hgnts are used 1t 1s obvious that they are frequently left burning unnecessarily during darkdays, which is usually due to carelessuses or neglect on thepart of the user who fails to turn them oii when through using. This unnecessary consumption of power is of great importance to concerns using many lights, and it is with a view of saving this waste of power that we have designed our new lamp-socket. 3

The construction and operation. of our novel iamp-socket, as will be more fully explained, I is such as to ermit of the current being cut out from a 'stant point.-as, for instance, from the power-'rooin'or station where the electricity is enerated-'in a way to r quire the individual mani ulation of each lamp in order to be reli hte The lamps in the circuitmay again e lighted by operatin a but ton constructed in a Wa to be turne ofi' by an instantaneous brea ing 'of the circuit,

which may be effected by quickly opening and closin the switch, as hereinafter described. heconstrnction'of our improve-] I ment is such as to permit of its application to many of the commercial forms of cases now found upon the market. With the above and other minor objects in I View our invention resides and consists in-the novel construction and combination of arts shown upon the accompanying sheet of rawings, forming a part of this specification, and upon which similar characters of reference denote like or: corresponding parts throughout theseveral figures, and of Which-- ;Figure 1 shows a central vertical longitudinal section through our improved lamp- Specification of Letters Patent;

Application filed October 13, 1904. Serial No 2123,316-

Patented July 1 7, 1906..

' detail sectional view of the magnet-corev and limb shown in Fig. 4.

Referrin in detail to the characters of reference marlied upon the drawings, A represents a suitable casing, B the ea or cover therefor, both of which are of su stantially the usual construction having an opening 0 therethrough for the operation of the armsture the whole being adapted for the attachment to abracket in the usual Way by means of a screw, .as indicated by D. Within this casing is arranged an electroma net comprising a central core E, having a irnb I, anda spool upon which the usual wire coils G are wound. This spool consists of a barrel F,

adapted to fit upon the core, andcontains heads F at either end, all of which spool is formed of insulating material.

It will be obvious from the foregoing that the wire maybe first wound upon the s 001 and then placed upon the core, after w ich the limb I can be attached by means of the screw H. The limb I extends outward ironi the core, then up and turned over the top head F to form an electrical contact at J.

A fibrous or other insulating piece is placed beneath the limb I and intermediate ofit and the threaded holder K, which is attached thereto by means of the screw M. This holder Kserves to receive the lamp L in the usual way by means of the latter being screwed therein. When insert-ed as above,

the respective wires oi the lamp engage with the screws H and holder K, the former being connected with the core and limb, while the lattenthrough the'screw M and its wires 0, is connectedwith the coil G.

The li' e-wires P and P are secured to the screws Q and R, respectively, the former being connected with the coil, While the latter is connected with the bracket S, towhioh the armature T is pivotally connected. The core of the magnet is provided with a spring-actuated pin U, that engages the under side of the 1 down into engagement wit." completes the electncel Patent, is-

.' nation with an electrohorseshoe nmgnet, of

- toched to the magnet within the circuit, and

. the in agnot, which ob vion sl 3 becom es charged become operative when the. armature is hold the e-inniturein contact omit 11nd contin n 1 such: time as when the at switch to hlfesk the circuit tnndierstood that the recount the current is cut out the magnet in the socket becomes n1- in dotted lines, thereby breaking the circuit,

where it remains until again ad usted by an armature in :1 wan; to nornnilly hold it up oil of the contectend Jot the limb, as shown in dotl ted lines, at such tin as when the circuit is 1 broken, but to allow 1 ormin z an electrical g contact with said limh when so pleced by an attendant and by reason of the influence of when armature is placed in said engagement. The under side of the orinetnrs adiucent to the to end of thenore is provided with a thin strip .7" of insulating material, which overcomes the magnetic attraction of the armeture by the residual magnetism of the elctro magnet, permitting the springs pin U to force the armature up when the ignet is not charged, thereby breaking the electrical con- When our lamps are up in circuit, they lnanipnlnted by an attendant and lronght the liml), which Lil through the s in a way to armature chargingthe m2 ing such engagement and operating; until cnt disconnects said armature toextingi 'en the light or ct. such other times as when the engineer or at -,te ndent at the main sta ion operetes the being ofconrse cfiective permitting the spring-pin U in the core 05 t a magnet to exert influence and throw the lever on into the cosition indicated.

ettendcntl "Hea ing thus described our invention, what we 'cla1m,-a-n(l desire to secure by Letters 1. In an electric lnmp socket, the combibindin -posts on the magnet, an armature pivots. y connected with one of-said posts and adapted to simultaneously engc the two limbs of the magnet, s lamp-socket atp t. a spring intermediate OI'SfiKi nnibs to engage the armature for entomancelly disconnecti th th t'h ti 1 mg i esame 11'011'1 6I!1ag-,. w en 1, e co trim-ii circuit is out out.

'2. In an electric-lamp socket, the combination with e magnet pro vided with connecting-posts for field wn'es and a connected l lamp-holder, of an armature to connect one of said posts with the magnet and hearing c t-crating means, and. a spring within tne magnet to ex'ignge the iiiiterniediotc portion of the armature whereby its connection with the nl hgnet will he ontonmticnlly broken when the circuit is out out.

3. in on electric-lamp socket, the combination with a horseshoe-cleotronnignet provided with ('()l1l10tll1{{- posts, of an armature extending; across both points of the nmgnet,

o hump-socket secured to the magnet within thccircnit, 2i spring within one limb of the magnet for mitomnticully operating said armature to disconnect the some from the magnct when thocironit through the socket on t out, and moans for operating the armature against the notion of its spring.

4. in on clectrio-lain socket, the coinhi nation with on elcctronmgnet having conne zting-posts for line- .vires, of a lamp-holder attached to and elmctricolly connected to the magnet, on armature pivotzilly attached to one of tho costs and adopted to engage the magnet, n, s n-in and plug *ithin the core of the magnet edn 'ited to disconnect the arms ture when the circuit through the socket is broken.

5. In an clectric-lmnp socket, the combiing-posts upon the magnet, on armature to engage said limb and connected withqone of said posts end-hearing an extension for opersting said armature, a spring; within the core to disconnect the armature from the limb when the circuit is cut out, and a lcm'p holder attached to said magnet.

Signed at Bridgeport, in the county of Fcirfield and State of Connecticut, this 11th day of October, A. D. 1904.

DUDLEY B, BULLARD. JOHN J. MINITER.

Witnesses: j

C. M. NEWMAN, WIILIAM V. D 

